What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
On September 12, 2011, at 1100 CDT, Cessna CE-120, N89954, flipped over on its back during an instructional flight while the instructor was demonstrating "high speed" taxi characteristics at the Camden, Arkansas airport (kcdh). The flight instructor felt that the aircraft began to exhibit yaw instability so he applied too much braking authority and the aircraft rotated around the main landing gear onto its back. The instructor and student were not injured and the aircraft sustained substantial damage. The aircraft was being operated as an instructional flight under 14 CFR part 91 when the accident occurred. The flight originated at kcdh and terminated at kcdh at 1100 CDT. Visual meteorological conditions prevailed at the time and a flight plan was not filed.
As the FAA filed it
ON SEPTEMBER 12, 2011, AT 1100 CDT, CESSNA CE-120, N89954, FLIPPED OVER ON ITS BACK DURING AN INSTRUCTIONAL FLIGHT WHILE THE INSTRUCTOR WAS DEMONSTRATING "HIGH SPEED" TAXI CHARACTERISTICS AT THE CAMDEN, ARKANSAS AIRPORT (KCDH). THE FLIGHT INSTRUCTOR FELT THAT THE AIRCRAFT BEGAN TO EXHIBIT YAW INSTABILITY SO HE APPLIED TOO MUCH BRAKING AUTHORITY AND THE AIRCRAFT ROTATED AROUND THE MAIN LANDING GEAR ONTO ITS BACK. THE INSTRUCTOR AND STUDENT WERE NOT INJURED AND THE AIRCRAFT SUSTAINED SUBSTANTIAL DAMAGE. THE AIRCRAFT WAS BEING OPERATED AS AN INSTRUCTIONAL FLIGHT UNDER 14 CFR PART 91 WHEN THE ACCIDENT OCCURRED. THE FLIGHT ORIGINATED AT KCDH AND TERMINATED AT KCDH AT 1100 CDT. VISUAL METEOROLOGICAL CONDITIONS PREVAILED AT THE TIME AND A FLIGHT PLAN WAS NOT FILED.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.